Cullman County, AL Water Table Trend
Cullman County's groundwater trend, from USGS's own readings
Cullman County's long-term well puts the trend at 2.1 ft per decade, rising, getting shallower over time, based on 103 measurements since 2007.
This is one representative well, not a county-wide survey, the same grain limit every page here discloses.
Cullman County's source well, in detail
Depth to water at the last reading was 37.8 ft below land surface. Readings span 2007-10-25 to 2025-01-14, 103 measurements from USGS well USGS-335929087021001 (Well Cullman Co. Well Near Cold Springs Al), part of the National Water Information System. The qualifying bar and the OLS fit behind this trend are documented in the methodology guide.
How Cullman County compares nationally
Cullman County sits at rank 124th of 1,449 ranked counties, ordered rising-to-declining, so a low number means a rising water table and a high one means fast decline. Cullman County, Alabama is home to about 92,604 people. See the fastest-moving counties guide for how Cullman County stacks up against the most extreme cases nationally.
Depth and quality are separate questions
This page answers a depth question, not a quality one. A well in Cullman County can be stable in depth and still worth testing for quality, or declining and still test clean, the two are measured separately, and only a direct test settles the second one.